Quick report. This is an issue I saw plaguing some adblockers for Chrome, Safari and Opera that when adding the following rules for Neowin.net the ad placeholders aren't removed due to some anti-adblocker CSS overriding code. However, the placeholders are removed in Firefox when using Adblock Plus; www.neowin.net##.banner-leaderboard www.neowin.net##.banner-square Here's a bug report about the issue here effecting Adblock (Chrome extension): http://code.google.com/p/adblockforchrome/issues/detail?id=5943 I can confirm it happens in Adguard when adding the rules above. Going by the bug report my guess is it'll probably have to be "fixed" (workedaround) in Adguard itself. This is how it looks in IE with Adguard (I highlighted the placeholder in red): http://img846.imageshack.us/img846/5070/internetexplorer.jpg This is how it's supposed to look like in Firefox with Adblock Plus: http://img534.imageshack.us/img534/6484/firefoxq.jpg So, can this 'issue' be workaround?